EP4072688B1 - Dispositif d'entraînement de corde, dispositif portatif permettant d'entraîner une corde comprenant un dispositif d'entraînement de corde, kit, procédé et utilisation - Google Patents

Dispositif d'entraînement de corde, dispositif portatif permettant d'entraîner une corde comprenant un dispositif d'entraînement de corde, kit, procédé et utilisation Download PDF

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Publication number
EP4072688B1
EP4072688B1 EP20825017.5A EP20825017A EP4072688B1 EP 4072688 B1 EP4072688 B1 EP 4072688B1 EP 20825017 A EP20825017 A EP 20825017A EP 4072688 B1 EP4072688 B1 EP 4072688B1
Authority
EP
European Patent Office
Prior art keywords
rope
driver
bag
storage bag
passage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP20825017.5A
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German (de)
English (en)
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EP4072688A1 (fr
EP4072688C0 (fr
Inventor
Michel SANDERSE
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Individual
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Individual
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Publication of EP4072688A1 publication Critical patent/EP4072688A1/fr
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Publication of EP4072688B1 publication Critical patent/EP4072688B1/fr
Publication of EP4072688C0 publication Critical patent/EP4072688C0/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
    • F03D80/50—Maintenance or repair
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D3/00—Portable or mobile lifting or hauling appliances
    • B66D3/04—Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B1/00—Devices for lowering persons from buildings or the like
    • A62B1/06—Devices for lowering persons from buildings or the like by making use of rope-lowering devices
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B35/00—Safety belts or body harnesses; Similar equipment for limiting displacement of the human body, especially in case of sudden changes of motion
    • A62B35/0043—Lifelines, lanyards, and anchors therefore
    • A62B35/0068—Anchors
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B35/00—Safety belts or body harnesses; Similar equipment for limiting displacement of the human body, especially in case of sudden changes of motion
    • A62B35/0093—Fall arrest reel devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/18—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes
    • B66C23/20—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes with supporting couples provided by walls of buildings or like structures
    • B66C23/207—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes with supporting couples provided by walls of buildings or like structures with supporting couples provided by wind turbines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
    • B66D1/60—Rope, cable, or chain winding mechanisms; Capstans adapted for special purposes
    • B66D1/74—Capstans
    • B66D1/7415—Friction drives, e.g. pulleys, having a cable winding angle of less than 360 degrees
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
    • B66D1/60—Rope, cable, or chain winding mechanisms; Capstans adapted for special purposes
    • B66D1/74—Capstans
    • B66D1/7489—Capstans having a particular use, e.g. rope ascenders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction

Definitions

  • the present disclosure relates to rope handling, in particular to motorized and essentially frictionless lowering, raising and/or storage of industrial rope for use by persons in rope access.
  • the present disclosure further relates to methods for maintenance and inspection of installations, in particular blades of wind turbines, which are largely performed through rope access.
  • US20030136870 describes a hand-supported and manually operated reel-less line retriever for rescue work.
  • aspects of the present disclosure relate to a portable device for storing and driving, i.e. hoisting or lowering, a rope from an elevated position, e.g. a surface of a tall structure, such as a wind turbine, rig or building.
  • the portable device can advantageously be used to lower a free end of a rope across an edge of a tall structure, e.g. into a valley or along a side wall of a tall structure.
  • the device is formed of an assembly of a rope storage bag (i.e. container), and a rope driver reversibly connected thereto.
  • a rope storage bag i.e. container
  • a rope driver reversibly connected thereto.
  • the storage bag serves as a support for the rope driver.
  • the components can be detached and the device can be more portable. For example, individual components may be carried to a work location separately and assembled on site. Further, bags of different volume (e.g. for holding different lengths of rope) may be interchanged.
  • a pliable or flexible rope storage bag the dimension of the bag can be adapted to an amount of stored rope, e.g. reduced, as rope is removed from the bag.
  • a lower portion of the bag is hardened, e.g. comprising or formed of a solid, e.g. hard plastic, bottom and sidewall.
  • the hardened lower portion of the bag serves as a solid connection point and stable support for the driver during operation (a stable position of the bag on an altitude surface and as a result a stable position of the connected driver).
  • the hardened part can additionally be reinforced at some places, e.g. at the driver connection points.
  • the upper part of the bag is pliable in order to easily close the bag for transport or use the bag for lifting, with or without inclusion of the driver.
  • a pliable skirt portion may be provided along an upper edge of the hardened lower portion.
  • bags with different dimensions for different volumes of rope can be provided, among which bags with two rope compartments.
  • the storage bag is interchangeable with variants with different heights.
  • Improving portability and/or reducing a dimension is particularly advantageous for tools used in rope access, e.g. for equipment used at high altitude.
  • the rope storage bag comprises a rope storage volume which is bound between a bottom surface of the bag and the outer side wall of the rope storage bag.
  • connection means for reversibly connecting the bag to respective corresponding counterparts on the rope driver.
  • Said means are disposed on reinforced portions along the outer side wall.
  • the connection means are preferably on the hardened part of the bag.
  • the connection means can be a Storz connection.
  • the connection also includes a quick release lock system to secure the connection.
  • the rope driver comprises a frame having at least two arm members extending outwardly from a central portion. Together the arms span (the diameter of) the bag. Preferably, near their respective free ends the arm members are provided with the corresponding counterpart connection means for reversibly connecting the rope driver to the bag.
  • the rope driver further comprises a rope passage having a dimension which matches a diameter of the rope.
  • the passage is formed between a pair of opposing rollers. That is, between a first roller carried for rotation about a primary axis and a second roller adjacent to the first roller and carried for rotation about a secondary axis parallel to the primary axis.
  • the passage is formed between drive coil and a clamp.
  • a drive mechanism e.g. an electric motor, arranged to drive at least one of the first and the second roller or the drive coil.
  • a section of rope -when inserted- can pass through the rope passage, thus enabling hoisting or lowering, i.e. driving, of the rope.
  • the rope passage is preferably disposed near the central portion of the frame such as to allow the rope to enter or exit the rope storage volume in dependence of a driving direction of the rope.
  • the rope passage is preferably disposed near the central portion of the frame such as to support an optimal distribution of rope in the bag. By positioning the rope passage disposed near the central portion of the frame the rope may enter or exit the rope storage volume in an essentially frictionless fashion (without sliding along a sidewall of the rope storage bag).
  • the rope driver preferably further comprises a handle, e.g. mounted to the frame, for operating the rope driver and/or carrying the rope driver and/or the assembly of the rope driver and the bag.
  • a handle e.g. mounted to the frame
  • the rope driver provides motorized control over the rope making lowering and/or raising of the rope faster and/or less labor intensive.
  • a rope By assembling the rope driver over the rope storage volume a rope may be disposed (e.g. during a rope lowering operation) or stored (e.g. during a rope raising operation) by a single person.
  • rope By assembling the rope driver over the rope storage bag rope may be disposed directly from or stored directly into the bag simultaneously with a rope driving operation. Directly storing a rope in a bag and/or dispensing a rope from a bag can avoid entanglement of the rope. Allowing the rope to enter/exit the rope storage volume in dependence of a driving direction in an essentially frictionless fashion, e.g. without sliding along a sidewall of the rope storage bag, further mitigates rope entanglement.
  • aspects of the present disclosure relate to a method, or use of the portable device, for inspection of rope for wear or validity, e.g. as part of regular security maintenance of professional climbing rope.
  • the regular inspection of rope includes the manual groping and viewing of the entire rope. With the present disclosure the passing of rope need not to be done manually but can be done automatically by the disclosure, thereby providing all attention for the actual rope inspection.
  • Rope access also referred to as industrial climbing allows workers, e.g. rope access engineers or technicians, to access difficult-to-reach locations without the use of scaffolding or cranes.
  • Rope access technicians descend, ascend, and traverse ropes for access and work while attached to a main and back-up rope for safety and work while attached to a main and back-up rope for safety.
  • the device according to the present disclosure reduces overhead associated with rope handling, e.g. by providing motorized rope hoisting and simultaneous rope storage and/or by other advantages as described herein.
  • FIG 2A depicts a schematic section side-view image of an embodiment of the device provided with a single rope passage.
  • FIG 2B provides a schematic top-view image of a strongly preferred embodiment of the device comprising a pair of rope passages.
  • the device 100 is formed of an assembly of a rope storage bag 10 and a rope driver 20 mutually connected.
  • the rope storage bag 10 has a hardened lower portion including hardened side walls 10w and a bottom surface 10s.
  • the hardened lower portion serves as a support for the rope driver.
  • the rope storage bag comprises a rope storage volume 10v which is bound between a bottom surface 10s of the rope storage bag 10 and the outer side wall 10w of the rope storage bag.
  • the bag comprises a pliable or flexible top-portion or skirt portion 10f.
  • the top portion may be a skirt essentially provided along the circumference of the hardened bottom part.
  • the pliable or flexible top-portion 10f e.g. the skirt portion, can be used to close the bag, e.g. for transport.
  • the pliable or flexible top-portion 10f is preferably suited (dimensioned and sufficiently pliable) to also accommodate the rope driver.
  • the pliable or flexible top-portion is preferably also provided with anchor points, e.g. lifting loops. These anchor points may be used to secure the bag or the assembly and/or to hoist the bag (including a stored rope) and optionally a rope driver up a tall structure.
  • anchor points may be used to secure the bag or the assembly and/or to hoist the bag (including a stored rope) and optionally a rope driver up a tall structure.
  • connection means 18 for reversibly connecting the bag to respective corresponding counterparts 28 on the rope driver.
  • Said means 18 are disposed on reinforced portions 11 near a free edge of the outer side wall 10w.
  • the rope storage bag is preferably provided with a solid bottom to allow firm positioning of the rope storage bag on an exterior surface of the structure to be worked on, e.g. on the nose-cone of a wind turbine.
  • the rope driver 20 comprises a frame 21.
  • the frame e.g. as shown, has two arm members 21a, 21b extending outwardly from a central portion. Near their free ends, the arm members are provided with corresponding counterpart connection means 28 for reversibly connecting the rope driver to the bag.
  • the connection means and corresponding counter-parts may be suitably formed by any known means including but not limited to clips, and nuts and bolts.
  • the means are a push and lock release such as a Storz system.
  • the rope driver 20 can be easily connected to the rope storage bag 10, e.g. by a push-turn movement.
  • a push-lock clip secures the connection between the driver and the bag.
  • the rope driver 20 further comprises a first roller 24 carried for rotation about a primary axis 24a and a second roller 25 carried for rotation about a secondary axis 25a parallel to the primary axis.
  • the rollers are mounted to the frame, e.g. on parallel axles, such that a rope passage 23 is formed between adjacent rollers.
  • the rope passage 23 having a dimension which matches the diameter of the rope 1 to grip said rope between outer surfaces 24s, 25 of the first and second rollers.
  • At least one of the rollers is provided with flanged side portions 24f (see FIG 2B ) to mitigate the rope eluding from the rope passage 23.
  • a roller provided with flanged side portions may be referred to as a bobbin or a pulley wheel.
  • the device comprises a plurality of adjacent rollers 24,25&24',25' to form a plurality of rope passages 23,23' between corresponding pairs of adjacent first and second rollers for driving a plurality of ropes.
  • the first rollers 24, 24' are both provided along the primary axis 24a, e.g. on a common axle.
  • rollers 25, 25' are provided on separate axles so they can be retracted separately to allow inserting or removing of a rope in/from the respective rope passages independent from each other.
  • first and second rollers 24, 25 and 24', 25' two rope passages 23, 23' are formed.
  • Providing a plurality of adjacent rollers advantageously allows raising or lowering of a plurality of ropes.
  • Mounting rollers on a common axle can allow simultaneous driving of a plurality of ropes, e.g. two ropes, with a single electric motor.
  • Mounting rollers on separate axles can allow individual driving of ropes, e.g. only one of two ropes, with a single electric motor.
  • other components of the device are likewise preferably arranged to match a number of provided rope passages.
  • a rope guiding system 40 (as discussed in more detail later) may be provided multiple times.
  • the rope driver 20 comprises a drive coil 80 and a releasable clamping roller or clamp 81, e.g. as shown in FIG 8A .
  • the drive coil is preferably bobbin shaped (having flanged side portions) to avoid the rope from eluding.
  • the clamp typically includes a contact portion 81a and a pressure means 81b, e.g. a spring, for providing a clamping force to hold the rope 1 or ropes onto the drive coil. By releasing the clamping force a rope can be inserted/released from the system as desired.
  • the drive coil preferably has a width to hold either one or two ropes.
  • this configuration allows simultaneously driving of two ropes over one coil ( FIG 8B ) or driving one rope with more grip by winding said rope twice over the coil ( FIG 8C ). Next to clamping the clamp functions thereby as a protection cover.
  • each rope is stored in a separate rope storage volume to mitigate possible entanglement of ropes.
  • a plurality of rope storage bags dimensioned/arranged for different lengths and/or numbers of rope can be provided to comprise different embodiments of the device.
  • the rope storage bag may be compartmented, e.g. by inner wall sections.
  • a housing comprising a drive mechanism 26, e.g. an electric motor.
  • the motor is coupled to primary axle along axis 24a, e.g. through a gear system 24g.
  • the drive mechanism is coupled to the drive coil.
  • the motor is additionally coupled to axes' 25a through corresponding gear systems 25g, provided the corresponding rollers are not retracted. By rotating the rollers rope can be driven through the rope passages.
  • the driver 20 can drive either one rope arbitrary or two ropes simultaneously depending on a setting of the gear system and/or insertion of a rope in the respective passages. With the single electromotor 26 one or two ropes can be lowered or hoisted.
  • the rope passage is disposed near the central portion of the frame such as to allow the rope to enter or exit the rope storage volume in dependence of a driving direction of the rope in an essentially frictionless fashion, e.g. without sliding along a sidewall of the rope storage bag.
  • the rope driver 20 is battery operated.
  • Battery operated devices advantageously can improve portability by reducing the need for electrical wiring and/or improved usability at remote locations.
  • the battery and the electromotor 26 would be positioned on opposite longitudinal sides of the frame 20 in order to optimize weight balance.
  • the device comprises a hodometer 30, preferably with a display, to keep track of a length of raised or lowered rope. Aspects relating to the hodometer will be explained in more detail below.
  • a handle 22 for operating the rope driver, e.g. controlling the driving speed and direction (lowering/lifting) of the ropes and with that to drive the rollers in forward or backward direction.
  • the handle can be used to carry the rope driver 20 and/or the assembly of the rope driver and the bag to a work site, e.g. as schematically depicted in FIG 3A schematically displaying a rope access engineer carrying an embodiment of a rope driver having two rope passages 23,23'.
  • the handle includes a throttle to enable a linear speed control of the rollers.
  • the device further comprises a pulley system 40, comprising one or more pulleys 41 for guiding a driven rope across an edge of the rope storage bag.
  • a pulley system is provided for each rope passage near the valley-end of the frame by which rope can be guided frictionless from/towards the rollers, i.e. without sliding along a sidewall of the rope storage bag.
  • the one or more pulleys 41 may be provided on a free end of the frame 21.
  • the pulleys 41 are positioned on extractable poles 42 which -when not in use- may be retracted within the length of the frame. Providing the pulley system 40 can improve frictionless guiding of a rope into a depth.
  • the pulley system 40 can, during a driving operation, guide a driven rope in an essentially frictionless fashion across the outer wall of the bag, across the edge of the tall structure, and/or across obstacles on the tall structure. Provision of extractable poles can improve clearance between a driven rope and the tall structure (it's sidewall and/or obstacles) e.g. as shown in FIG 3C . Providing clearance may further reduce friction on a driven rope, e.g. avoiding sliding of a rope across obstacles such as sharp protrusions on a blade of a wind turbine.
  • the pulley guidance system is replaced by a enclosing profile to guide the rope.
  • the enclosing profile is fitted with smooth edges to avoid damaging the rope.
  • rope By assembling the rope driver over the rope storage bag, rope may be picked up from respectively stored in the bag simultaneously with the rope driving operation.
  • Direct lowering (picking up) a rope from the storage bag respectively direct lifting (storing) a rope into the storage bag, together with guiding the ropes over the (extended) pulleys, and/or enclosing profiles, can avoid entanglement of rope and keeps the rope in place.
  • one of the ropes can be decoupled from the driver to disentangle the ropes by pulling on the other rope.
  • the extractable pole may allow an operator to assume an even safer working position, e.g. further away from an edge.
  • the extractable pole is dimensioned to have a length of at least 20 cm, e.g. in a range 20 and 60 cm, e.g. 40 cm. The longer the adjustable pole the further the device and its operator can be positioned from the edge.
  • the pulleys are preferably flanged such that the rope does not elope.
  • the rope storage bag is preferably suitably dimensioned to match the required length of a rope to be used. By not over dimensioning rope and bag the size and weight of the device is minimized, thus increasing portability. An additional advantage is a reduced change of rope entanglement. Whilst the height of the bag is flexible, the diameter of the bag is fixed as it is bound to the dimensions of the rope driver. Typically, the rope storage bag has a diameter in a range between 30 and 60 cm, matching the length of the rope driver. With a diameter of 40 cm and a height of the hardened part of a storage bag of 45 cm approximately 200 m of rope will fit.
  • the rope storage bag and the rope driver further comprise attachment points 10c, e.g. openings or hooks for carabiners or cow tails, to secure bag and driver to a rope access technician and/or to an anchoring point on the structure to be worked on. Provision of anchoring points improves safety, reduces risk of falling of device and/or of personnel.
  • attachment points 10c e.g. openings or hooks for carabiners or cow tails
  • the rope driver 20 comprises gear systems arranged to simultaneously drive the corresponding rollers 24 and 25 in opposite directions of rotation. By driving both rollers of one rope passage grip on the rope during a driving operation may be improved.
  • FIG 3B schematically depicts a rope access engineer carrying an embodiment of the device 100 with a rope storage bag 10 including a pliable skirt portion 10f with lifting loops 10c.
  • the rope driver 20 and rope are not visible as the pliable skirt portion is closed around the driver.
  • FIG 3C schematically depicts a rope access engineer operating a portable device 100 according to the disclosure arranged for driving two ropes 1.
  • the device is positioned near an edge 2v of a valley, e.g. an edge 2v of a tall structure such as the nose cone of a wind turbine.
  • the pliable skirt 10f is folded back around the hardened side walls 10h.
  • the rope driver 20 is assembled on, and supported by, the rope storage bag. Clearance between the rope and the edge of the valley is provided by the rope guiding system 40 including extendable poles 42 to guide the rope across the edge.
  • FIG 3D provides a photo of a bobbin-shaped roller 24.
  • the outer surfaces 24s, 25s of the rollers comprise an anti slip coating, e.g. a rubber coating.
  • Providing the rollers with an anti-slip coating improves grip on the ropes, e.g. during lowering and/or lifting operations may improve.
  • rollers of each passage is mounted on a sliding mechanism 27 to selectively adjust and maintain a dimension of the rope passage.
  • the rollers are positioned in pairs along the longitudinal sides of the frame such that on each side a rope passage 23 is formed.
  • Rollers 25 are separately retractable e.g. with corresponding buttons 25k, against corresponding spring resistances of springs 28 (see FIGs 5A and B ) in sliding mechanism 27.
  • the spring resistances provide for clamping force on the rope between two corresponding rollers 24 and 25.
  • the first roller 24 is mounted on the frame 21.
  • the second roller 25 is mounted on a sliding mechanism 27 coupled to the frame.
  • the rollers may slide S (be pulled) to an end position 27e of the sliding mechanism, forming an open position, e.g. as shown in FIG 5B , to allow easy inserting or removal of rope in or out of the rope passage.
  • the sliding mechanism includes a spring 28 to maintain a contact force F on the rope in the rope passage. Said contact force can advantageously improve grip, e.g. during a hoisting (lifting) operation of a rope.
  • the spring 28 is coupled to sliding mechanism 27 and exerts a force F pulling the second roller towards the first roller 24.
  • a force F pulling the second roller towards the first roller 24 is improved.
  • adjusting the tension on the spring i.e. adjusting the spring constant
  • grip on the rope may be adjusted, e.g. in dependence on a weight of a length of rope to be lifted.
  • a lock may be provided to maintain the rollers in a closed position, e.g. to support the spring to prevent the rope from slipping.
  • Rollers 24 have a bobbin-form such that rollers 25 fall within the bobbin-flanges so that the rope can be held in place preventing it from eluding (running off the rollers).
  • the rope passages formed by rollers 24 and 25 are preferably positioned near the longitudinal middle of the frame in order to optimize disentangled pulling, respectively stowing away of rope.
  • the sliding mechanism By providing a sliding mechanism it is possible to insert the rope in the rope passage and clamp the rope in place, e.g. between the rollers or between the drive coil and the clampl. For example, by moving the sliding mechanism to an open position a rope that is already lowered along a blade of a wind turbine may be easily connected to the driver. Accordingly, it allows disconnecting the rope driver and/or the device from a rope at any position along its length. While disconnected the rope driver and/or storage bag may be stored at a safe location, e.g. inside the nacelle.
  • one or more of the rollers and/or axles can be detachably mounted to the frame such that an operator may prepare the device for driving one or multiple ropes.
  • the device comprises a clamping mechanism to, in use, provide a contact force onto the rope in the passage so as to improve grip thereon during a driving operation.
  • said contact force may be provided between the driving coil or roller and clamp 81 or sliding mechanism 27.
  • the device is arranged to halt driving of the rope when a preset maximum pulling force is exceeded. Halting a driving operation can improve safety.
  • the motor is arranged to halt when a preset maximum torque is exceeded.
  • the gear system and/or the sliding mechanism may be arranged to decouple when a pre-set pulling force is exceeded. It will be appreciated that the maximum pulling force exerted on the device depends on the weight of the length of rope(s) to be used. The weight of rope applied in wind turbines is approximately 65g/m. Accordingly, when using two times 200m of rope an upper limit may be about 30 kg (i.e. about 300N).
  • the device comprises a hodometer for measuring a length (driving distance) of lowered and/or lifted rope.
  • a hodometer for measuring a length (driving distance) of lowered and/or lifted rope.
  • an operator can keep track of a length of lowered and/or hoisted rope and accordingly keep track of both the position of the end of the rope as well as the weight of rope hanging from the system.
  • the value of the maximum preset pulling force can be adjusted in dependence of an output value of the hodometer 30 thereby improving safety.
  • the preset pulling force e.g. a maximum torque
  • the preset pulling force can be set at a lower value than for a situation wherein a longer length of rope is used. This would also allow repositioning the end of rope to the same height as previous times (in order to reach a previous workspot).
  • the maximum pulling force can be set, as such safeguarding the current operation.
  • the devices according to the present disclosure may advantageously be used in combination with a separate pulley system, e.g. a free standing pulley system 50 as shown in FIGs 6A and 6B .
  • aspects of the present disclosure relate to a kit 200 of the device 100 according to the present disclosure and a separate free standing pulley system 50 arranged to be reversibly anchorable to the tall structure.
  • the separate pulley system 50 is preferably arranged to be mountable near an edge of the structure to be worked on. By placing a pulley near an edge of a structure to be worked on a rope can be lowered and/or raised across said edge essentially frictionless. Placing a separate extra pulley system near an edge can allow placing other parts of the device, e.g. the driver with rope storage bag 10 at a further distance from such edge. For example, if the structure to be worked on is a cliff, e.g. a ravine, the separate pulley system is preferably arranged to be reversibly mountable (anchored) to soil or rocks.
  • the extra pulley system 50 includes one or more pulleys 52 mounted on the end of an adjustable arm 53.
  • the arm is preferably reversibly mounted on a frame.
  • the extra pulley system is preferably provided with one or more suction cups 51 for mounting the system to a surface of a structure to be worked on, e.g. the nose cone of a wind turbine.
  • suction cups to form particularly strong, yet flexible, connection means to mount the extra pulley system to an outer surface of a nose cone of a wind turbine.
  • the one or more pulleys 52 of the extra pulley system 50 are mounted such that they may pivot freely around an axis. This can allow a user more freedom in positioning of the device relative to a direction of an edge of the structure to be worked on. By using pivotable pulleys the rope may follow a straight line between driver and pulleys during lifting or lowering.
  • the extra pulley system comprises anchoring points for securing the pulley system to the structure and/or to an operator.
  • aspects of the present disclose further relate to a method, i.e. a rope access method, for performing maintenance or inspection work on a blade of a wind turbine.
  • the device according to the present disclosure is used to lower, hoist and store rope.
  • the method 300 comprises:
  • the device may be also used in the lowering step to lower the rope along the halted blade.
  • the steps may be suitably repeated for performing work on other blades of the wind turbine.
  • rope handling operations in particular raising and/or lowering may be improved, namely: better time efficiency, less physical effort, reduced wear and improved safety.
  • aspects of the present disclosure relate to a method for inspection of rope for wear or validity, as part of regular security maintenance of professional climbing rope.
  • the regular inspection of rope includes the manual groping and viewing of the entire rope.
  • the passing of rope needs thereby not to be done manually but can be done automatically by the disclosure, with that providing all attention for the actual rope inspection.
  • Other aspects of the present disclosure relate to a method wherein the device 100 according to the invention, in particular its rope driving and storage capabilities are utilized in a mechanical advantageous rope and pulley system, e.g. for hoisting a weight or a human.
  • FIG 9 schematically depicts an embodiment wherein the device 100 is used in conjunction with a pulley system 90 consisting of two fixed 91 and one movable pulley 92 to lift a weight "m"with a 3:1 mechanical advantage.
  • a pulley system allows lifting comparatively heavier objects. It will be understood that the device can be used to similar advantage with other or further pulley systems rigged for other ratios of mechanical advantage.
  • rope driver and the rope storage bag separately.
  • the roper driver and the rope storage bag respectively having the properties as described herein in relation to the device.
  • a rope access engineer may, e.g. before traveling to a remote worksite, elect to equip himself with a single rope driver and a plurality of rope storage bags, e.g. differently dimensioned bags, each connectable to the driver and each provided with a desired length of rope.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Emergency Management (AREA)
  • Business, Economics & Management (AREA)
  • General Health & Medical Sciences (AREA)
  • Sustainable Energy (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical & Material Sciences (AREA)
  • Sustainable Development (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Emergency Lowering Means (AREA)
  • Storing, Repeated Paying-Out, And Re-Storing Of Elongated Articles (AREA)
  • Wind Motors (AREA)

Claims (15)

  1. Dispositif portable (100) pour entraîner une corde (1) à partir d'une structure élevée (2), telle qu'une éolienne, le dispositif étant constitué d'un ensemble composé d'un sac de rangement de la corde (10) et d'un dispositif d'entraînement de corde (20) qui y est connecté de manière réversible, le sac de rangement de la corde comprenant :
    - un volume de rangement de corde (10v) situé entre une surface de fond et une paroi latérale extérieure du sac de rangement de la corde, la paroi latérale extérieure étant reliée à
    ladite surface inférieure le long d'un bord ;
    caractérisé par
    - au moins deux moyens de connexion prévus sur des parties renforcées (11) le long de la paroi latérale extérieure pour connecter de manière réversible le sac à des contreparties correspondantes sur le dispositif d'entraînement de la corde,
    le dispositif d'entraînement de corde comprenant :
    - un cadre (21) comprenant au moins deux éléments de bras s'étendant vers l'extérieur à partir d'une partie centrale, dans lequel les bras sont pourvus, à proximité de leurs extrémités libres, de moyens de connexion correspondants pour relier de manière réversible le dispositif d'entraînement de la corde au sac ;
    - un passage de corde (23) dont la dimension correspond au diamètre de la corde, le passage étant formé entre un premier rouleau (24) entraîné en rotation autour d'un axe primaire et un second rouleau (25) adjacent au premier rouleau et entraîné en rotation autour d'un axe secondaire parallèle à l'axe primaire, ou le passage formé entre une bobine d'entraînement (80) et une pince (81) ;
    - un moteur électrique (26) monté sur ledit cadre et conçu pour entraîner au moins l'un du premier et du second rouleau ou la bobine d'entraînement de manière à faire passer une corde dans le passage de corde ; et
    - une poignée (22) pour commander le dispositif d'entraînement de corde et/ou pour transporter le dispositif d'entraînement de corde et/ou l'ensemble du dispositif d'entraînement de corde et du sac ;
    et dans lequel le passage de la corde est disposé près de la partie centrale du cadre de manière à permettre à la corde d'entrer ou de sortir du volume de rangement de la corde en fonction de la direction d'entraînement de la corde.
  2. Dispositif selon la revendication 1, dans lequel ladite surface inférieure et la paroi latérale extérieure sont formées d'un matériau formant une partie inférieure durcie du sac de rangement de corde (10) et dans lequel une partie de jupe souple (101) est prévue le long d'un bord supérieur de la partie inférieure durcie, et dans lequel la partie de jupe souple (101) est agencée de façon à permettre à un opérateur de couvrir le dispositif, incluant le dispositif d'entraînement de corde à connexion réversible, et de fermer le volume de rangement de corde en vue du transport.
  3. Dispositif selon la revendication 1, dans lequel la partie inférieure durcie du sac sert de point de connexion solide et de support stable pour le conducteur pendant le fonctionnement.
  4. Dispositif selon la revendication 1 ou 2, comprenant une pluralité de passages de corde, chacun formé entre les paires adjacentes respectives du premier et du second rouleau ou entre la bobine d'entraînement et la pince.
  5. Dispositif selon l'une quelconque des revendications précédentes, dans lequel le dispositif est agencé pour arrêter l'entraînement de la corde lorsqu'un couple maximal prédéfini est dépassé ;
    dans lequel le dispositif comprend de préférence un hodomètre (30) pour mesurer la longueur de corde entraînée, et dans lequel le couple maximal prédéfini est de préférence ajusté en fonction d'une valeur de sortie de l'hodomètre (30).
  6. Dispositif selon l'une quelconque des revendications précédentes, comprenant en outre un système de guidage de corde (40) monté près d'une extrémité libre de l'un des au moins deux éléments de bras pour guider la corde de manière essentiellement sans frottement à travers la paroi extérieure du sac et/ou à travers un bord de la structure haute pendant une opération d'entraînement.
  7. Dispositif selon l'une quelconque des revendications précédentes, dans lequel une ou plusieurs des poulies (41) et l'un du premier et du second rouleau sont en forme de bobine pour empêcher la corde de s'échapper pendant l'opération d'entraînement.
  8. Dispositif selon l'une quelconque des revendications précédentes, comprenant en outre un mécanisme de serrage, pour fournir une force de contact sur la corde dans le passage de la corde, et/ou dans lequel au moins un des premiers et seconds rouleaux ou au moins une des paires de premiers et seconds rouleaux ou la pince est montée sur un mécanisme coulissant (27), dans lequel le mécanisme coulissant comprend de préférence un ressort (28) pour maintenir la force de contact (F) sur la corde entre les rouleaux adjacents ou entre la bobine et la pince.
  9. Kit (200) du dispositif selon l'une quelconque des revendications précédentes et système de guidage de corde ou de poulie indépendant et séparé, conçu pour être ancré de manière réversible à une structure haute.
  10. Dispositif d'entraînement de corde portable (20) à utiliser en combinaison avec un sac de rangement de corde (10) pour former le dispositif (100) selon l'une quelconque des revendications 1 à 9, le dispositif d'entraînement de corde comprenant :
    - un cadre (21) comprenant au moins deux éléments de bras s'étendant vers l'extérieur à partir d'une partie centrale, les bras étant pourvus, à proximité de leurs extrémités libres, de moyens de connexion permettant de relier de manière réversible le dispositif d'entraînement de corde à des contreparties correspondantes sur un sac de rangement de corde ;
    - un passage de corde (23) dont la dimension correspond au diamètre de la corde, le passage étant formé entre un premier rouleau (24) entraîné en rotation autour d'un axe primaire et un second rouleau (25) adjacent au premier rouleau et entraîné en rotation autour d'un axe secondaire parallèle à l'axe primaire, ou le passage formé entre une bobine d'entraînement (80) et une pince (81) ;
    - un moteur électrique (26) monté sur ledit cadre et conçu pour entraîner au moins l'un du premier et du second rouleau ou la bobine d'entraînement de manière à faire passer une corde dans le passage de corde ; et
    - une poignée (22) pour commander le dispositif d'entraînement de corde et/ou pour transporter le dispositif d'entraînement de corde et/ou l'ensemble du dispositif d'entraînement de corde et du sac ;
    dans lequel le passage de la corde est disposé à proximité de la partie centrale du cadre.
  11. Sac de rangement de corde (10) à utiliser en combinaison avec le dispositif d'entraînement de corde (20) selon la revendication 10 pour former le dispositif (100) selon l'une quelconque des revendications 1 à 9, le sac de rangement de corde comprenant :
    - un volume de rangement de corde (10v) délimité par une surface inférieure et une paroi latérale extérieure, la paroi latérale extérieure étant reliée à ladite surface inférieure le long d'un bord, la surface inférieure et la paroi latérale extérieure étant constituées d'un matériau formant une partie inférieure durcie du sac de rangement de corde et dans lequel une partie de jupe souple (101) est prévue le long d'un bord supérieur de la partie inférieure durcie et dans lequel la partie de jupe souple (101) est disposée de manière à permettre à un opérateur de couvrir l'appareil, incluant le dispositif d'entraînement de corde à connexion réversible, et de fermer le volume de rangement de corde en vue du transport ; et
    - au moins deux moyens de connexion prévus sur des parties renforcées (11) près d'un bord libre de la paroi extérieure pour connecter de manière réversible le sac de rangement de corde à des contreparties correspondantes respectives sur le dispositif d'entraînement de corde.
  12. Procédé d'accès à la corde (300) pour des travaux de maintenance ou d'inspection sur une pale d'une éolienne, comprenant :
    - l'arrêt des pales de l'éolienne avec l'une des pales en position verticale descendante ;
    - l'abaissement de la partie libre d'une corde ancrée à une extrémité de l'éolienne le long de la pale verticale arrêtée ;
    - la réalisation des travaux d'entretien ou d'inspection sur une longueur de la pale à l'aide d'un cordiste ancré à ladite partie abaissée de la corde ;
    - le relevage et le rangement simultanés de la corde dans un sac de rangement de corde après avoir effectué les travaux d'entretien ou d'inspection à l'aide du dispositif portable selon l'une des revendications 1 à 9 ou du dispositif d'entraînement de corde portable selon la revendication 10.
  13. Utilisation du dispositif selon l'une quelconque des revendications 1 à 9 pour l'inspection de la corde, ladite utilisation consistant à entraîner une longueur de corde à une vitesse fixe pour une inspection visuelle et/ou manuelle de l'usure.
  14. Utilisation du dispositif selon l'une quelconque des revendications 1 à 9 pour soulever un poids, ladite utilisation comprenant l'utilisation du dispositif en combinaison avec un système de poulie conçu pour soulever un poids avec un avantage mécanique.
  15. Procédé de ramassage de corde pour hisser une ou plusieurs cordes d'escalade à une hauteur de travail, le procédé comprenant :
    - la descente d'une ligne de ramassage à partir de la hauteur de travail ;
    - la fixation de la ou les cordes d'escalade à la corde de ramassage ;
    - le levage des cordes d'escalade à une hauteur de travail à l'aide du dispositif selon l'une quelconque des revendications 1 à 9.
EP20825017.5A 2019-12-12 2020-12-11 Dispositif d'entraînement de corde, dispositif portatif permettant d'entraîner une corde comprenant un dispositif d'entraînement de corde, kit, procédé et utilisation Active EP4072688B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL2024446A NL2024446B1 (en) 2019-12-12 2019-12-12 Portable device for driving a rope
PCT/NL2020/050780 WO2021118357A1 (fr) 2019-12-12 2020-12-11 Dispositif d'entraînement de corde, dispositif portatif permettant d'entraîner une corde comprenant un dispositif d'entraînement de corde, kit, procédé et utilisation

Publications (3)

Publication Number Publication Date
EP4072688A1 EP4072688A1 (fr) 2022-10-19
EP4072688B1 true EP4072688B1 (fr) 2024-01-17
EP4072688C0 EP4072688C0 (fr) 2024-01-17

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EP20825017.5A Active EP4072688B1 (fr) 2019-12-12 2020-12-11 Dispositif d'entraînement de corde, dispositif portatif permettant d'entraîner une corde comprenant un dispositif d'entraînement de corde, kit, procédé et utilisation

Country Status (5)

Country Link
US (1) US20230087633A1 (fr)
EP (1) EP4072688B1 (fr)
CN (1) CN115135388B (fr)
NL (1) NL2024446B1 (fr)
WO (1) WO2021118357A1 (fr)

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GB1461757A (en) * 1974-05-20 1977-01-19 Leisystem Pulley assemblies
US4165830A (en) * 1977-08-03 1979-08-28 Marine Construction & Design Co. Crab pot warp line coiler
US6267244B1 (en) * 1996-06-14 2001-07-31 Liberty Tool, Llc Bag for storing and dispensing cord
US5868219A (en) * 1997-12-15 1999-02-09 The United States Of America As Represented By The Secretary Of The Army Rappel rope storage and deployment system
KR200202177Y1 (ko) * 2000-05-16 2000-11-15 정진택 안전 밴드의 로우프 감김통 지지벨트 체결장치
US6796522B2 (en) * 2002-01-23 2004-09-28 Cindy R. Braun Reel-less line retriever
US6880671B2 (en) * 2002-08-01 2005-04-19 Charmaine Raby Save me! sling
CN201627090U (zh) * 2010-04-08 2010-11-10 杨佳霖 逃生晾衣架
CN101983912A (zh) * 2010-10-16 2011-03-09 张运河 一种电动缠绕提升装置
EP2520792B2 (fr) * 2011-05-05 2018-04-25 Siemens Aktiengesellschaft Système d'extraction et procédé de fourniture d'un système d'extraction
GB201204845D0 (en) * 2012-03-20 2012-05-02 Dmm Internat Ltd Back-up system and apparatus for use in climbing
RU2530585C2 (ru) * 2012-08-16 2014-10-10 Открытое акционерное общество "Ракетно-космическая корпорация "Энергия" имени С.П. Королева" Устройство для доставки объекта
CA2867025C (fr) * 2013-03-15 2015-07-14 Howard M. Chin Conteneurs pour systemes d'entretien meteorologiques pour programmes d'entretien d'eolienne en mer et navires d'entretien pour transporter des capsules contenant de tels conteneurs
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CN206934462U (zh) * 2017-07-13 2018-01-30 陈忠 一种降速逃生背包

Also Published As

Publication number Publication date
CN115135388A (zh) 2022-09-30
US20230087633A1 (en) 2023-03-23
CN115135388B (zh) 2023-06-09
NL2024446B1 (en) 2021-09-01
EP4072688A1 (fr) 2022-10-19
WO2021118357A1 (fr) 2021-06-17
EP4072688C0 (fr) 2024-01-17

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